A298634 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 94, 21, 81, 107, 246, 462, 991, 1953, 4272, 9838, 22598, 52716, 122648, 291782, 694686, 1655782, 3946960, 9422118, 22546272, 53963889, 129254366, 309752937, 742752613, 1781632012, 4274164398, 10255665681, 24611457341, 59070424950

Offset

1,2

Comments

Column 7 of A298635.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=5
..0..0..1..1..1..0..0. .0..0..0..0..0..1..1. .0..0..0..0..0..0..1
..0..1..0..1..0..1..0. .0..1..1..1..1..0..1. .0..1..1..1..0..1..1
..1..1..0..0..0..1..0. .1..0..0..1..0..0..1. .1..0..1..0..0..0..1
..0..1..0..1..0..1..0. .1..0..1..1..1..0..1. .0..1..1..1..1..1..0
..0..0..1..1..1..0..0. .1..1..0..0..0..1..1. .0..0..0..0..0..0..0

Crossrefs

Cf. A298635.

Sequence in context: A299827 A146551 A297985 * A033414 A218053 A118684

Adjacent sequences: A298631 A298632 A298633 * A298635 A298636 A298637

Keyword

nonn

Author

R. H. Hardin, Jan 23 2018

Status

approved